Gravitation – Online MCQs Test – Physics 9th

1. Newton’s law of gravitational holds between every two objects on the _________

2. The motion of a falling ball towards Earth is due to the ____________

3.

4. It changes the path of the Moon around the Earth.

5. The constant horizontal velocity required to put the satellite into a stable circular orbit around the Earth is called:

6.

7. Gravitation force is _____________ of the medium between the objects.

8. The time required for a satellite or complete one revolution around the Earth in its orbit is called its:

9. Spring balance is used to measure ______________

10. Near Earth’s surface g = _____________

11. The first artificial satellite, Sputnik-1, was sent into space by:

12. In 1798, he completed the 1^st experiment that demonstrated Newton’s Law of universal gravitation.

13.

14. Gravitational field of Earth is directed ____________

15. __________ is a natural satellite.

16. According to Newton’s law of universal gravitation, force is inversely proportional to ____.

17. ____________ are used to put satellites into orbits.

18. According to Newton’s law of universal gravitation, force ∝ ____________

19. Numerical value of _______________ remains constant everywhere.

20. Sun’s gravitational attraction to the Earth is ________ times greater than that of the moon to the Earth.